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V4L/DVB: gspca - ov534: Add Auto Exposure

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This also makes manual exposure actually work: it never worked before
because AEC was always enabled.

Signed-off-by: Max Thrun <bear24rw@gmail.com>
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Max Thrun 2010-02-27 17:20:21 -03:00 committed by Mauro Carvalho Chehab
parent 8b7fbda484
commit f293882252
1 changed files with 53 additions and 2 deletions
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55
drivers/media/video/gspca/ov534.c
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@ -62,6 +62,7 @@ struct sd {
u8 exposure;
u8 agc;
u8 awb;
u8 aec;
s8 sharpness;
u8 hflip;
u8 vflip;
@ -83,6 +84,8 @@ static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setawb(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setaec(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getaec(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
@ -175,6 +178,20 @@ static const struct ctrl sd_ctrls[] = {
.get = sd_getawb,
},
{ /* 6 */
{
.id = V4L2_CID_EXPOSURE_AUTO,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto Exposure",
.minimum = 0,
.maximum = 1,
.step = 1,
#define AEC_DEF 1
.default_value = AEC_DEF,
},
.set = sd_setaec,
.get = sd_getaec,
},
{ /* 7 */
{
.id = V4L2_CID_SHARPNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
@ -188,7 +205,7 @@ static const struct ctrl sd_ctrls[] = {
.set = sd_setsharpness,
.get = sd_getsharpness,
},
{ /* 7 */
{ /* 8 */
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
@ -202,7 +219,7 @@ static const struct ctrl sd_ctrls[] = {
.set = sd_sethflip,
.get = sd_gethflip,
},
{ /* 8 */
{ /* 9 */
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
@ -703,6 +720,20 @@ static void setawb(struct gspca_dev *gspca_dev)
sccb_reg_write(gspca_dev, 0x63, 0xaa); /* AWB off */
}
static void setaec(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->aec)
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) | 0x01);
else {
sccb_reg_write(gspca_dev, 0x13,
sccb_reg_read(gspca_dev, 0x13) & ~0x01);
setexposure(gspca_dev);
}
}
static void setsharpness(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
@ -768,6 +799,7 @@ static int sd_config(struct gspca_dev *gspca_dev,
#if AWB_DEF != 0
sd->awb = AWB_DEF
#endif
sd->aec = AEC_DEF;
#if SHARPNESS_DEF != 0
sd->sharpness = SHARPNESS_DEF;
#endif
@ -838,6 +870,7 @@ static int sd_start(struct gspca_dev *gspca_dev)
setagc(gspca_dev);
setawb(gspca_dev);
setaec(gspca_dev);
setgain(gspca_dev);
setexposure(gspca_dev);
setbrightness(gspca_dev);
@ -1066,6 +1099,24 @@ static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val)
return 0;
}
static int sd_setaec(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->aec = val;
if (gspca_dev->streaming)
setaec(gspca_dev);
return 0;
}
static int sd_getaec(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->aec;
return 0;
}
static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;